CN213502782U

CN213502782U - Sand prevention speed regulator and variable speed bicycle head

Info

Publication number: CN213502782U
Application number: CN202022087089.3U
Authority: CN
Inventors: 唐士平
Original assignee: Changzhou Zhongyi Electric Technology Co ltd
Current assignee: Changzhou Zhongyi Electric Technology Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-06-22
Anticipated expiration: 2030-09-22

Abstract

The utility model discloses a sand-proof speed regulator and a variable speed bicycle head, which comprises a fixed part, an electric connection part fixed on the inner periphery of the fixed part, a rotating part sleeved on the outer periphery of the fixed part, and a sand-proof assembly and an elastic reset piece positioned in the radial clearance of the fixed part and the rotating part; one end of the elastic resetting piece is connected with the rotating part, the other end of the elastic resetting piece is connected with the fixing part, and when the rotating part rotates from an initial position to a limit position, the deformation of the elastic resetting piece is gradually increased; the sand prevention assembly comprises two rolling bearings which are positioned at two axial ends of the rotating part and are simultaneously connected with the fixed part and the rotating part; two rolling bearings are respectively positioned on two sides of the elastic reset piece. The utility model discloses a be located the antifriction bearing that elasticity reset piece both sides and realize the relative seal of fixed part and rotation portion, when the vehicle emptys, antifriction bearing can prevent that sand and dust from getting into the radial clearance of fixed part and rotation portion, avoids the speed regulator inefficacy, improves the security performance.

Description

Sand prevention speed regulator and variable speed bicycle head

Technical Field

The utility model relates to a speed regulator technical field especially relates to a sand prevention speed regulator and variable speed bicycle locomotive.

Background

The speed regulator is mainly used for regulating the running speed of vehicles such as variable speed bicycles, electric vehicles, scooters and the like, and generally comprises a fixed part fixed with a frame and a rotating part used for rotating and regulating the speed, wherein the fixed part and the rotating part are in clearance fit in the existing speed regulator, and a sealing structure does not exist between the fixed part and the rotating part for not influencing the rotation of the rotating part.

Along with the continuous improvement of people's living demand, the speed regulator also obtains the wide application on sharing bicycle and slide electric motor car, nevertheless because sharing bicycle is in for a long time outdoors, empty easily, the slide electric motor car arouses that the wheel is less highly great also to empty easily, if the sealed problem of speed regulator does not obtain the solution, when the vehicle emptys, get into the dust and sand very easily between rotation portion and the fixed part, lead to the unable rotation of rotation portion, perhaps unable smooth the reseing after the rotation, there is very big potential safety hazard, how to design a speed regulator with sand prevention function is the technical problem that needs to solve at present.

SUMMERY OF THE UTILITY MODEL

In order to solve the speed regulator among the prior art and not have sand prevention function, the car leads to the speed regulator to advance husky, unable normal rotation's technical problem easily after empting, the utility model provides a sand prevention speed regulator and variable speed bicycle locomotive solve above-mentioned problem.

The utility model provides a sand-proof speed regulator, which comprises a fixed part, an electric connection part fixed on the inner periphery of the fixed part, a rotating part sleeved on the outer periphery of the fixed part, and a sand-proof assembly and an elastic reset piece which are positioned in the radial clearance of the fixed part and the rotating part; one end of the elastic resetting piece is connected with the rotating part, the other end of the elastic resetting piece is connected with the fixing part, and when the rotating part rotates from an initial position to a limit position, the deformation of the elastic resetting piece is gradually increased; the sand prevention assembly comprises two rolling bearings which are positioned at two axial ends of the rotating part and are simultaneously connected with the fixed part and the rotating part; the two rolling bearings are respectively positioned on two sides of the elastic reset piece.

Preferably, the elastic reset piece is a torsion spring, and when the rotating part rotates from the initial position to the limit position, the torsion spring gradually tightens.

Furthermore, the fixing part comprises a middle fixing disc and protection rings fixed at two axial ends of the middle fixing disc, the torsion spring is sleeved on the middle fixing disc, the middle fixing disc is provided with a first shaft shoulder protruding outwards in the radial direction, and a fixing hole suitable for inserting one end of the torsion spring is formed in the first shaft shoulder; the rolling bearing is positioned between the guard ring and the rotating part.

Further, each protective ring is provided with a second shaft shoulder protruding outwards in the radial direction, and the second shaft shoulder abuts against the outer end face of the corresponding rolling bearing; the inner periphery of the rotating part is provided with a boss which protrudes inwards in the radial direction, and the boss abuts against the inner end faces of the two rolling bearings.

Preferably, a plurality of mounting holes are arranged on the axial end faces of the protection ring and the middle fixing disc in a one-to-one correspondence mode.

Preferably, the axial end of the guard ring is provided with a fixing claw extending axially, and the axial two ends of the intermediate fixing disc are provided with a concave groove suitable for the fixing claw to be inserted.

Preferably, a rotation knob is further fixed to an outer periphery of the rotation portion.

Furthermore, the electric connection part is provided with a containing cavity for containing the sensor, a connecting wire is fixed on the electric connection part, and one end of the connecting wire extends into the containing cavity to be electrically connected with the sensor.

Preferably, the electrical connection part and the fixing part are manufactured through an injection molding process.

The utility model also provides a variable speed bicycle locomotive, including the locomotive with above the sand prevention speed regulator, the locomotive includes the pipe support and is located the handle at pipe support both ends, the sand prevention speed regulator is suitable for the cover on the pipe support, and the periphery of pipe support is equipped with the recess that holds the electric connection portion.

The utility model has the advantages that:

(1) sand prevention speed regulator and variable speed bicycle locomotive, reset through elasticity and realize the automatic re-setting after rotation portion is rotatory, reset through the antifriction bearing that is located elasticity both sides simultaneously and realize the relative seal of fixed part and rotation portion, when the vehicle emptys, antifriction bearing can prevent that sand and dust from getting into the radial clearance of fixed part and rotation portion, avoids the speed regulator inefficacy, improves the security performance.

(2) Sand prevention speed regulator and variable speed bicycle locomotive, antifriction bearing erects in the both ends of rotation portion and fixed part, can play the structure supporting role on the one hand, for elasticity resets and reserves the activity space, on the other hand can change the rotation portion when rotatory into rolling friction by sliding friction, frictional force reduces, the drive power that needs during the speed governing reduces.

(3) Sand prevention speed regulator and variable speed bicycle locomotive, the fixed part contains the guard ring that stretches out from axial both ends, and the second shaft shoulder that stretches out by the guard ring shelters from the protection to antifriction bearing's outer terminal surface, improves structural integrity.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a perspective view of an embodiment of the sand control governor of the present invention;

FIG. 2 is a front view of an embodiment of the sand control governor of the present invention;

fig. 3 is a left side view of an embodiment of the sand control governor of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 2;

FIG. 5 is a sectional view taken along line B-B of FIG. 2;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 7 is a schematic structural view of the head of the variable speed bicycle of the present invention;

fig. 8 is a schematic cross-sectional view of the pipe frame in the head of the speed-variable bicycle of the present invention.

In the figure, 1, a sand prevention speed regulator, 2, a pipe frame, 201, a groove, 3, a handle, 4, a fixing part, 401, an intermediate fixing disc, 4011, a first shaft shoulder, 4012, a fixing hole, 4013, a sunken groove, 402, a protection ring, 4021, a second shaft shoulder, 4022, a fixing claw, 5, a rotating part, 501, a boss, 6, an elastic resetting part, 7, a rolling bearing, 8, a mounting hole, 9, a rotating button, 10, an electric connection part, 1001, an accommodating cavity, 1002, a sensor, 11 and a connecting wire.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-6, a sand prevention governor comprises a fixed part 4, an electrical connection part 10 fixed on the inner periphery of the fixed part 4, a rotating part 5 sleeved on the outer periphery of the fixed part 4, and a sand prevention assembly and an elastic reset piece 6 positioned in the radial gap between the fixed part 4 and the rotating part 5; one end of the elastic resetting piece 6 is connected with the rotating part 5, and the other end of the elastic resetting piece is connected with the fixing part 4, and when the rotating part 5 rotates from an initial position to a limit position, the deformation of the elastic resetting piece 6 is gradually increased; the sand prevention assembly comprises two rolling bearings 7 which are positioned at two axial ends of the rotating part 5 and are simultaneously connected with the fixed part 4 and the rotating part 5; two rolling bearings 7 are respectively located on both sides of the elastic return member 6.

The initial position of rotation portion 5 indicates that elasticity resets when 6 is in free state and fixed part 4's relative position, and the extreme position of rotation portion 5 indicates that elasticity resets when 6 is in maximum deflection and fixed part 4's relative position, and fixed part 4 and rotation portion 5 are the tubular structure, and antifriction bearing 7 includes interior fixing base, outer fixing base and the ball of connecting interior fixing base and outer fixing base, interior fixing base and 4 fixed connection of fixed part, outer fixing base and rotation portion 5 fixed connection. Since the rolling bearings 7 are provided near both axial ends of the rotating portion 5, it is possible to prevent external dust from entering the radial gap between the rotating portion 5 and the fixed portion 4.

In an embodiment of the present invention, the elastic restoring member 6 is a torsion spring, and when the rotating portion 5 rotates from the initial position to the limit position, the torsion spring is gradually tightened. When the device is installed, one end of the torsion spring is fixed with the rotating part 5, and the other end of the torsion spring is fixed with the fixing part 4. When the acceleration is needed, the rotating part 5 is rotated and simultaneously the torsion spring is tightened, and when the rotating part 5 is loosened, the rotating part 5 moves reversely under the action of the elastic restoring force of the torsion spring to restore to the initial state.

The fixing portion 4 may adopt, but is not limited to, the following structure: the fixing part 4 comprises a middle fixing disc 401 and protection rings 402 fixed at two axial ends of the middle fixing disc 401, the torsion spring is sleeved on the middle fixing disc 401, the middle fixing disc 401 is provided with a first shaft shoulder 4011 protruding outwards in the radial direction, and the first shaft shoulder 4011 is provided with a fixing hole 4012 suitable for inserting one end of the torsion spring; the rolling bearing 7 is located between the guard ring 402 and the rotating part 5. Further, each guard ring 402 has a second shoulder 4021 projecting radially outward, and the second shoulder 4021 abuts against the outer end surface of the corresponding rolling bearing 7; the inner periphery of the rotating part 5 has a boss 501 projecting radially inward, and the boss 501 abuts against the inner end faces of the two rolling bearings 7. As shown in fig. 4, the second shoulder 4021 abuts against the outer end surface of the inner fixing seat of the rolling bearing 7, the boss 501 abuts against the inner end surface of the outer fixing seat of the rolling bearing 7, and the boss 501 and the second shoulder 4021 axially fix the rolling bearing 7.

As shown in fig. 3 and 5, a plurality of mounting holes 8 are correspondingly formed in the axial end surfaces of the guard ring 402 and the intermediate fixing disk 401, and fixing screws penetrate through the mounting holes 8 to fix the guard ring 402 and the intermediate fixing disk 401.

In one embodiment of the present invention, as shown in fig. 4 and 5, the guard ring 402 has axially extending retaining claws 4022 at one axial end thereof, and the intermediate retaining plate 401 has recessed grooves 4013 at both axial ends thereof for insertion of the retaining claws 4022. When the fixing portion 4 is assembled, the intermediate fixing disk 401 and the two protection rings 402 are first pre-positioned by the cooperation of the fixing claws 4022 and the recessed grooves 4013, and then the intermediate fixing disk 401 and the two protection rings 402 are fixed by fixing screws.

Preferably, a rotation knob 9 is further fixed to the outer periphery of the rotation portion 5 to facilitate the rider to rotate the rotation portion 5.

Specifically, as shown in fig. 4 and 5, the electrical connection portion 10 has a receiving cavity 1001 for receiving the sensor 1002, the connection wire 11 is fixed to the electrical connection portion 10, and one end of the connection wire 11 extends into the receiving cavity 1001 to be electrically connected with the sensor 1002.

Preferably, the electrical connection portion 10 and the fixing portion 4 are formed by an injection molding process, and the sealing effect can be ensured by integrally forming the electrical connection portion and the fixing portion by the injection molding process.

A variable speed bicycle head, as shown in fig. 7 and 8, comprises a head and the sand prevention speed regulator 1, wherein the head comprises a pipe frame 2 and handles 3 positioned at two ends of the pipe frame 2, the sand prevention speed regulator 1 is suitable for being sleeved on the pipe frame 2, and the periphery of the pipe frame 2 is provided with a groove 201 for accommodating an electric connection part 10.

When the bicycle is assembled, the pipe frame 2 passes through the center of the fixing part 4, the connecting line 11 extends towards the middle part of the pipe frame 2, the connecting line 11 is used for connecting a circuit in a variable speed bicycle, when the rotating part 5 is rotated, the sensor 1002 receives a position change signal of the connecting line 11 and sends an acceleration signal to the controller, and the controller controls the vehicle to accelerate.

In the description of the present invention, it is to be understood that the terms "center", "inner", "outer", "axial", "radial", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A sand control governor characterized by: the sand prevention device comprises a fixed part (4), an electric connection part (10) fixed on the inner periphery of the fixed part (4), a rotating part (5) sleeved on the outer periphery of the fixed part (4), and a sand prevention assembly and an elastic reset piece (6) which are positioned in a radial gap between the fixed part (4) and the rotating part (5);

one end of the elastic resetting piece (6) is connected with the rotating part (5), the other end of the elastic resetting piece is connected with the fixing part (4), and when the rotating part (5) rotates from an initial position to a limit position, the deformation of the elastic resetting piece (6) is gradually increased;

the sand prevention assembly comprises two rolling bearings (7) which are positioned at two axial ends of the rotating part (5) and are simultaneously connected with the fixed part (4) and the rotating part (5); the two rolling bearings (7) are respectively positioned at two sides of the elastic reset piece (6).

2. The sand control governor according to claim 1, wherein: the elastic reset piece (6) is a torsion spring, and when the rotating part (5) rotates from the initial position to the limit position, the torsion spring is gradually tightened.

3. The sand control governor according to claim 2, wherein: the fixing part (4) comprises a middle fixing disc (401) and protection rings (402) fixed at two axial ends of the middle fixing disc (401), the torsion spring is sleeved on the middle fixing disc (401), the middle fixing disc (401) is provided with a first shaft shoulder (4011) protruding outwards in the radial direction, and a fixing hole (4012) suitable for inserting one end of the torsion spring is formed in the first shaft shoulder (4011); the rolling bearing (7) is located between the guard ring (402) and the rotating part (5).

4. The sand control governor according to claim 3, wherein: each guard ring (402) is provided with a second shoulder (4021) protruding outwards in the radial direction, and the second shoulders (4021) abut against the outer end face of the corresponding rolling bearing (7); the inner periphery of the rotating part (5) is provided with a boss (501) protruding inwards in the radial direction, and the boss (501) abuts against the inner end faces of the two rolling bearings (7).

5. The sand control governor according to claim 3, wherein: and a plurality of mounting holes (8) are correspondingly arranged on the axial end faces of the protective ring (402) and the intermediate fixed disk (401) one by one.

6. The sand control governor of claim 5, wherein: the axial end of the guard ring (402) is provided with fixing claws (4022) extending axially, and the axial two ends of the middle fixing disc (401) are provided with recessed grooves (4013) suitable for the fixing claws (4022) to be inserted.

7. The sand control governor according to claim 1, wherein: and a rotating button (9) is further fixed on the periphery of the rotating part (5).

8. The sand control governor according to claim 1, wherein: the electric connection part (10) is provided with an accommodating cavity (1001) for accommodating the sensor (1002), a connecting wire (11) is fixed on the electric connection part (10), and one end of the connecting wire (11) extends into the accommodating cavity (1001) and is electrically connected with the sensor (1002).

9. The sand control governor according to claim 3, wherein: the electric connection part (10) and the fixing part (4) are manufactured through an injection molding process.

10. The utility model provides a variable speed bicycle locomotive which characterized in that: the sand prevention speed regulator comprises a headstock and the sand prevention speed regulator as claimed in any one of claims 1 to 9, wherein the headstock comprises a pipe frame (2) and handles (3) positioned at two ends of the pipe frame (2), the sand prevention speed regulator (1) is suitable for being sleeved on the pipe frame (2), and a groove (201) for accommodating the electric connection part (10) is formed in the periphery of the pipe frame (2).